Electric locomotive



(N0 Moclel.)

0. F. WINKLER. ELECTRIC LDGIOMVOTIVE.

No. 510,947. Patented Dec. 19, 1893.

WYTNESSES:

UNIT-ED STATES PATENT FFICE.

CHARLES F. VVINKLER, OF TROY, NEW YORK, ASSIGNOR TO THE UNITED COLUMBIANELECTRIC COMPANY, OF NEW JERSEY.

ELECTRlC LOCOMOTIVE.

SPECIFICATION forming part of Letters Patent No. 510,947, dated December19, 1893. Application filed March 11, 1893. Serial No. 465,621. (Nomodel.)

To all whom it may concern.-

Be it known that 1, CHARLES E. WINKLER,

a citizenof the United States, residing at Troy, in the county ofRensselaer and State of New York, have invented certain new and usefulImprovements in Electric Motors, of which the following is a full,clear, and exact description. r

My invention relates to electric motors and their application to cars.It relates more particularly to the construction of the motor, the typeof motor being that described in my application filed May 24, 1892,Serial No. 434,163. The motor described in that application comprisestwo armatures located, respectively, on two axles of a car, anda singlefield magnet in which there is but a single magnetic circuit whichincludes both armatures. The field magnet consists of two bodies of ironsurrounded by coils of wire, rigidly connected together and supportedupon the car axles. In such a structure it is necessary that the axlesshall always be in the same horizontal plane. Otherwise the field magnetstructure would be subject to severe strain. As it is impossible tomaintain the road-bed perfectly accurate these strains will necessarilyoccur.

The object of this invention is to be able to utilize the type of motordescribed in said application, and to this end consists of certainmodifications in the construction of the motor whereby the axles may bepermitted to move out of the coincident planes without subjecting theparts to strain.

The invention will be described in detail with reference to theaccompanying drawings, in which- Figure 1 represents a transversesection through the motor and car-axles, and Fig. 2 represents an endelevation of one-half of the motor separated on the line XX of Fig. 1.

Referring to the drawings by letter, A A respectively represent the twoaxles of a car; a, ct, represent car wheels carried thereby. Mounteddirectly upon each axle is a rotary armature B.

0 represents the field magnet of the motor, under the influence of whichboth armatures are placed. Magnetically speaking, this field magnetconsists of two iron bodies, 0, c, located on opposite sides oi: thearmatnres, and

supported upon the axle by means of bolsters or other devices connectingoffsets or brackets, shown in dotted lines in Fig. 2, attached to thesides of the pole-pieces. Each of these iron bodies is surrounded bycoils of wire, d, through which the electric current passes in such adirection as to establish a single magnetic circuit which includes bothiron bodies and the. armatures in series. On the line XX of Fig. 1 thetwo iron bodies are separated but abut squarely against each other, theabutting surfaces being smooth and in intimate contact. The abuttingends are provided exteriorly with flanges, e, which are surrounded andheld together by curved yokes, f, having a U-shaped cross section. Theextremities of the yokes have formed upon them bosses, f, which areperforated vertically to receive bolts, f Two of these bolts are usedone on each side, and their purpose is to clamp the two yokes,whichstand diametrically opposite each othertogether, and thus couple theparts of the field magnet. These bolts are of brass, and between theyokes they are surrounded by brass sleeves, f which limit the amount ofclamping pressure which may be put upon the field magnet parts. In thesame plane with these yokes and between the iron parts of the fieldmagnet are inserted two brass or other non-mag-- netic spacing blocks,g. The flanges e and the yokes are formed on concentric circles, thecenter of which is in a line drawn through the two car axles. Theenergizing coils, d, are located on each side of the joint.

It will now be obvious that if the car travels over inaccuracies in theroad-bed,so that one or more wheels will drop below the othe'rs, theaxles are free to assume corresponding positions, and the two ends ofthe motor, in following the axles, will twist or slide upon each otherat the joint, and will suffer no ill effects from strain. The yokes holdthe parts together, and at the same time permit them to move upon eachother. When the abutting surfaces are made true, the joint will offervery little resistance to the lines of force, and in fact, when themagnets are energized the contact between the parts is much more perfeetthan when they are tie-energized.

It will be observed that although I have described this motor asconnected directly upon the axles, separate armaturesha'fts may beprovided which shall gear to the axles through any suitable train.

I-Iaving described my invention, I claim- 1. A single electric motorprovided with two rotary armatures geared respectively with two caraxles, and with a single field magnet acting upon both of saidarmatures, said field magnet being formed in two parts flexiblyconnected together, in combination with said car axles, substantially asset forth.

2. The combination with two car axles, of an electric motor havingafield magnet rigidly connected to both' axles and provided with a jointwhich permits the axles to move out of coincident planes and therebycause the parts to slide or twist upon each other, substantiallyasdescribed.

3. An electric motor havinga field magnet consisting of twosubstantially parallel iron bodies,'each of whichis divided into twoparts andconnected rigidly and respectively to two supports which aremovable with respect to each other, said partsbeing connected togetherby a yielding joint,- substantially as and for the purpose set forth. Inan electric motor, a field magnet having-two abutting parts each ofwhich is pro vided with a flange in combination with a yoke or collarsurrounding and embracing said flanges to hold the parts together.

5. In an electric motor, a field magnet consisting oftwo parallel ironbodies surrounded by coils of wire and mechanically connected togetherto'form one structure, the same being divided into two parts which abutagainst each other to maintain the magnetic circuit, the abutting edgesprovided with flanges, in combination with yokes which surround and embrace said flanges, the yokes being clamped together, substantially asdescribed.

6. The combination of two car axles, a motor armature geared orotherwise connected to each, a field magnet structure having a singlemagnetic circuit which includes both armatures in series, the fieldmagnet having a yielding joint between the axles, substantially asdescribed.

7. An electric motor,having two armatures included in a single fieldmagnet circuit, two car axles respectively connected with-said armaturesand a field magnet divided into two parts, magnetically connectedtogether, the joint being yielding and in a vertical plane substantiallyas described.

8. The combination of two. armatures and a single field magnet structureacting upon both, said field magnet being dividediatt apoint'between-the armatures andparallel to their shafts, the parts beingheld inco'ntact with but permitted to slide upon eachother.

In testimony whereof I subscribe my'signature in presence of twowitnesses.

CHARLES F. W'INKLER.

Witnesses:

WM. .A. ROSENBAUM, FRANK S. OBER.

